| 摘要 |
PURPOSE:To obtain excellent electric performance and oxygen absorbing reaction by holding an electrolyte to a fine primary particle of large specific surface area and also generating a clearance by close contact of the aggregated relatively coarse secondary particle to serve as a gas passage. CONSTITUTION:At least 20wt.% red lead relating to lead dust is kneaded with dilute sulfuric acid to produce lead dioxide. Thereafter, the lead dust is added and kneaded to produce desired lead dioxide, and paste can be prepared. Next, a positive pole lattice is filled with this paste to manufacture a positive plate 1 by applying aging and formation. A plate group, interposing a separator 3 between the positive plate 1 and a negative plate 2, is provided. The periphery of the positive and negative plates 1, 2 in a battery jar and a group of these plates is densly filled with fine particles 8 mainly composed of hydrated silicon dioxide as an electrolyte holder. A granular thermoplastic resin layer is provided in an upper part of the fine particles, and by irradiating infrared rays, the granular thermoplastic resin layer is sintered to manufacture a closed type lead acid battery by forming a porous material layer 9. |
